I present my new book on debunking the sex spectrum!. Order now on Amazon!. I tackle 10 common sex spectrum arguments and teach the reader how to respond with detailed knowledge from evolutionary and developmental biology literature.

"Among the many surprises and oddities that biological investigations on sexes are revealing, one is particularly intriguing: even in higher eukaryotes with well-differentiated male and female roles, the initial steps of sex-determination pathways are bewilderingly diverse and.

Changing birth certificates doesn’t change biological reality.

Our culture often has an unhealthy relationship with Fear. First, it teaches us to ignore Fear when it’s there to protect us from harm. Second, it teaches us to treat our Fear as Truth when we are feeling anxious from a challenge that would help us grow. Neither is correct.

Healthy fears can save us from harm, but beware their embrace and dangerous charm. Please Don’t Feed the Fears releases on August 28, our new children’s book about a creature called Fear who grows when fed. Author and illustrator @PTElephant teaches both kids and adults how to

RT @zaelefty: BREAKING: World Boxing announced that they will institute a once-in-a-lifetime PCR test for the SRY gene to protect the femal….

RT @PTElephant: Just started work on an app to accompany my second book (releasing later this year). It'll release alongside a simple lesso….

Even rare conditions like Smith-Lemli-Opitz Syndrome (SLOS) show us that sex is never undefinable. SLOS is caused by mutations in the DHCR7 gene, which blocks the final step of cholesterol production. Cholesterol is often viewed as a “bad” molecule due to its link to.

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Fear can be helpful and good in some cases, but spoiling it will expose its two faces. Our new children's book releases on August 28! . It teaches kids what happens when you feed fear—and how to shrink it back down with courage and care. Kids learn that fear shouldn’t be

No one begins their life by producing mature.gametes; this requires a long developmental.pathway. Similar to how our organs do not.immediately function when they first start developing, so too our sex requires development before its role is fulfilled. In this way, sex can be.

It is true, however, that whether you have testes or ovaries is directly linked to whether you will differentiate the Wolffian or Mullerian ducts, because the gonad type and its hormone profile controls the duct type. If you have testes, you will develop the Wolffian duct. If.

A common misunderstanding is that the gonads are part of the Mullerian and Wolffian ducts (which form the internal genitalia). But the gonads do not originate from the Mullerian and Wolffian ducts. The gonads are part of the gonadal ridge, and the Mullerian and Wolffian ducts.

The ovaries are the egg producing equipment, and in women with MRKH, they are unaffected. MRKH involves underdevelopment of the Müllerian duct, which differentiates into the female’s internal genitalia of the oviducts, uterus, cervix, and upper vagina. Women with MRKH may

A comment on our "Sex Screening in Sports" video. The logic here is flawed. Conflating sex with other biological advantages does not follow, because being male is the advantage that overshadows all others. When comparing like-to-like athletes, being male gives you a boost to

The Paradox Institute needs just $4000 for the final legal costs of non-profit setup. A generous gift will help us produce animated videos, books, children's shows, and curriculum full-time to restore reality to science education for generations!. 🔗

Please Don’t Feed the Fears is an illustrated children’s book about a little creature called Fear. Kids learn that fear shouldn’t be avoided, but understood—so it doesn’t grow out of control. @PTElephant wrote this book after her great grandmother passed away, who was a guiding

This Fall, we are releasing the definitive educational handbook on human sex development and the many disorders that can arise. With visual diagrams and detailed commentary, we show how each of us becomes a male or female. Sign up at:

How is someone's sex identified? There are multiple methods, some more accurate than others. The key principles with all these methods is that we are taking a specific trait and looking at its association with the production of sperm or eggs. Let's explore from lowest resolution.